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2014/10/15 ¤U¤È 10:15:45
iphone Programming Glossary: videocompositionHow can I add overlay text on a video, then re-encode it? http://stackoverflow.com/questions/10190333/how-can-i-add-overlay-text-on-a-video-then-re-encode-it parentLayer addSublayer titleLayer ONLY IF WE ADDED TEXT AVMutableVideoComposition videoComp AVMutableVideoComposition videoComposition videoComp.renderSize videoSize videoComp.frameDuration CMTimeMake 1 30 videoComp.animationTool AVVideoCompositionCoreAnimationTool.. videoSize videoComp.frameDuration CMTimeMake 1 30 videoComp.animationTool AVVideoCompositionCoreAnimationTool videoCompositionCoreAnimationToolWithPostProcessingAsVideoLayer videoLayer inLayer parentLayer AVMutableVideoCompositionInstruction instruction.. videoLayer inLayer parentLayer AVMutableVideoCompositionInstruction instruction AVMutableVideoCompositionInstruction videoCompositionInstruction instruction.timeRange CMTimeRangeMake kCMTimeZero mixComposition duration AVAssetTrack videoTrack mixComposition..
how to control orientation of video assembled with AVMutableComposition http://stackoverflow.com/questions/4175060/how-to-control-orientation-of-video-assembled-with-avmutablecomposition share improve this question Setup a video composition that will handle rotate scale AVMutableVideoComposition videoComposition AVMutableVideoComposition videoComposition retain videoComposition.renderSize CGSizeMake 320 240 videoComposition.frameDuration.. a video composition that will handle rotate scale AVMutableVideoComposition videoComposition AVMutableVideoComposition videoComposition retain videoComposition.renderSize CGSizeMake 320 240 videoComposition.frameDuration CMTimeMake 1 30 AVMutableVideoCompositionInstruction.. will handle rotate scale AVMutableVideoComposition videoComposition AVMutableVideoComposition videoComposition retain videoComposition.renderSize CGSizeMake 320 240 videoComposition.frameDuration CMTimeMake 1 30 AVMutableVideoCompositionInstruction instruction..
CoreAnimation, AVFoundation and ability to make Video export http://stackoverflow.com/questions/5031721/coreanimation-avfoundation-and-ability-to-make-video-export 0 0 1024 768 wrapLayer addSublayer animationLayer wrapLayer addSublayer videoLayer AVMutableVideoComposition videoComposition AVMutableVideoComposition videoComposition AVMutableVideoCompositionInstruction videoCompositionInstruction AVMutableVideoCompositionInstruction.. animationLayer wrapLayer addSublayer videoLayer AVMutableVideoComposition videoComposition AVMutableVideoComposition videoComposition AVMutableVideoCompositionInstruction videoCompositionInstruction AVMutableVideoCompositionInstruction videoCompositionInstruction.. videoComposition AVMutableVideoComposition videoComposition AVMutableVideoCompositionInstruction videoCompositionInstruction AVMutableVideoCompositionInstruction videoCompositionInstruction videoCompositionInstruction.timeRange CMTimeRangeMake..
How to combine video clips with different orientation using AVFoundation http://stackoverflow.com/questions/6575128/how-to-combine-video-clips-with-different-orientation-using-avfoundation addMutableTrackWithMediaType AVMediaTypeVideo preferredTrackID kCMPersistentTrackID_Invalid AVMutableVideoComposition videoComposition AVMutableVideoComposition videoComposition videoComposition.frameDuration CMTimeMake 1 30 videoComposition.renderScale 1.0.. preferredTrackID kCMPersistentTrackID_Invalid AVMutableVideoComposition videoComposition AVMutableVideoComposition videoComposition videoComposition.frameDuration CMTimeMake 1 30 videoComposition.renderScale 1.0 AVMutableVideoCompositionInstruction instruction.. kCMPersistentTrackID_Invalid AVMutableVideoComposition videoComposition AVMutableVideoComposition videoComposition videoComposition.frameDuration CMTimeMake 1 30 videoComposition.renderScale 1.0 AVMutableVideoCompositionInstruction instruction AVMutableVideoCompositionInstruction..
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